Air-compression-cylinder lubricator



Patented July 1o, 1928.

UNETED STATESA F F l C.

AIR-COMPRESSION-CYLNDER LUBRICATOR.

Application filed .Tune 27,

The present invention relates to an air compression cylinder lubricator to automatically lubricate the air compression cylinder of an air compressor machine, and primarily designed for useon railway locomotives.

The device consists of a lubricator for oil reservoirs with a regulating adjustmentand sight feed attached, placed in a suitable position higher or above the air compression cylinder and having a feed pipe attached, and connecting with the air compression cylinder; also consisting of an air inlet valve arrangement so designed and constructed that the air ventering the air compression cylinder will create a vacuum in the oil feed line from the lubricator; this oil feed line also having a valve arranged to hold the vacuum thus created, which will cause the oil to pass from the reservoir into the feed line and into the airA compression cylinder in the desired quantity.

rIhe air compression cylinder has an air inlet valve so arranged that the air inlet valve requires more pressure to open it than is required by the vacuum valve in the oil feed line so that the oil feed line will thus operate to secure the desired vacuum required to cause the oil to flow from the oil reservoir to the air compression cylinder.

In the drawing:

Figure 1 is an elevation of the combination of parts forming the subject mattei` of this invention,

Figure 2 Iis a sectional view of a Valve arrangement7 Figure 3 is an enlarged detail section taken substantially on the line 3 3 kof Figure l.

Referring tothe drawings in detail it will be seen that the numeral 5 denotes an oil reservoir in which extends a tube 6 to the bottom thereof and through the top thereof being connected with a regulator valve 7 and a sight feed 8. The numeral 9 denotes the filler plug and the numeral 10 the air which is normally closed a valve 16 on a stem 17 slidable through a spider guide 1927. serial No. 201,771.

structure 18 and held closed by a spring rThe valve B consists of casing sections 2t) and' 21 threadedV together'. A perforated guide 22 is disposed in the casing through which is slidable a valve stem 23 about which is disposed a spring 24 for holding a valve 25 on the stem closed against. the opening 26. The pipe 1l is connected to the upper end of the casing 20 by means of suitable coupling 27 or in any other desired manner. The two valves 16 and 25 are held in place by their respective coil springs as explained. The feed line valve connections and oil reservoir must have airtight connections. This device is intended to feed the oil automatically with the air compression piston in motion and ywhen the air compression piston ceases motion in the cylinder the vacuum is released in the feed pipe and thusthe oil ceases to flow. air valve A which allows the air compres sion cylinder to become filled with air is sufficiently large to allow an unrestricted flow of air into the air compression cylinder so that the maximum efficiency of the air compression cylinder is maintained, the air valve spring being so tensioned that it will not hinder the compression volume ofthe air compression cylinder, yet holds the valve in closed position when the air cylinder is not being charged. The vacuum valve B in the oil feedl pipe is held to its seat with the coil spring and this valve and its coil spring are so arranged that said valve will operate with al slightly less pull from the air compression cylinder than the air inlet valve that charges the cylinder ywith air. The oil is placed in the reservoir or lubricatorand passes into the tube 6 reaching almost to the bottom of the oil reservoir, thence up the tube to the regultaiirg valve, then into the sight feed and through the oil feed pipe 11 into the air cylinder.

It is thought that the construction, operation, and advantages of this invention will now be quite apparent to those skilled in the art without a more detailed description thereof. The present embodimentv of the invention has been disclosed in detail merely by way of example since in actual practice it The loo

attains the features of advantage enumerated as desirable in the statement of the invention and the above description. It will be apparent that changes in the details of"construction, and in the combination and arrangement of parts may be resorted to lli without departing from the spirit-and scope of the invention as hereinafter claimed. or. sacrificing any of its advantages.

Having thus described the invention, what, I claim as new is v A device for automatically eontrollingthe. feeding of oil to an air compressing cylinder Comprising in combination a; valve easing, formed with a valve seat therein and 'having means to engage the casing in communieationwith the cylinder, an air inlet, a cheek valve inthe casing elosable, against .the seat away flQIll. the Cylinder, spring means urgingtlie valvev againsty the sea-t, aA

second valve easing tapped. into the irst mentioned valve casing to..eXtend laterally therefrom, a valve seat in said second mentioned casing, anoil eheClwalve in the seeond mentioned easing closable against the seat-thereinv away from the iii-st, mentioned easing, spring means urging the second mentioned Cheek, valve closed against. the second mentionedseat, and means for Conneetingx the endf off the second mentioned easing remote 'from the irst me11ti0nedasing withaisource of oil. f

In testimony whereof I4 ati-YX my si gnature..

GEORGE E. TURNER.` 

